1 Introduction Joint attention (JA), described as the active, shared coordinated attention of two people on an object or an event of interest (Gabouer and Bortfeld 2021), plays a critical role in the development of language, cognition, and social skills in children (Carpenter et al. 1998; Tomasello 2014; Mundy and Newell 2007). In particular, there is a growing consensus that joint attentional interactions play a key role in the early stages of language acquisition (see Çetinçelik et al. 2021).